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[Important] Briefly-discontinued support for the following devices because Power Save Polling (PSP) caused connection issues with some access points.

Intel PRO/Wireless 3945BG Network Connection

Intel PRO/Wireless 3945ABG Network Connection Please get the previous version, 12.04.0000 (6HWC05WW), from the following link for these devices. http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/6hwc05ww.exe http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/6hwc05ww.txt

(New) Added support for Intel WiFi Link 5350.

(New) Added support for ThinkPad Edge 14",15",E40,E50.

Note: Please refer to the README file under the "File details" section for a complete list of changes fixed by this driver update.

Important information

Support for Windows 2000 was terminated. On Windows 2000, use the old version, 11.05.0 API 7KWC50WW.

Requirements

Make sure that the following driver prerequisite were installed on your system before installing this driver:

If you currently use IEEE 802.1x authentication on Windows XP Service Pack 1 and do not use WPA encryption, Lenovo recommends you uninstall Q826942 (WPA Supplicant update rollup package in Windows XP) and Q815485 (WPA Wireless Security Update in Windows XP). This does not apply if you are running Windows XP Service Pack 2. To check if Q826942 or Q815485 is installed and to uninstall it:

Start Windows XP and logon with administrative privileges.

Click Start and then click Control Panel.

Click Add or Remove Programs.

Click Windows XP Hotfix (SP2) Q826942 or Windows XP Hotfix (SP2) Q815485 if it is listed under Currently installed programs.

Click Remove and follow the instructions on the screen.Note: The above action will remove all the fixes within the update rollup package, Q826942. You may need to re-install the other specific hotfixes you expect for this rollup package.

You may need to re-enter security information after updating the Wireless LAN driver.

If you use Single Sign-On with the following authentications, ThinkVantage Access Connections version 4.22 or higher is needed.

LEAP on Windows XP

[Specification changes] 2200BG/2915ABG Network Connection will report lower signal strength than with previous driver versions. Because the 2200BG/2915ABG methodology was changed to be more accurate and responsive, similar to the 3945BG/3945ABG. However, wireless network performance and functions are not affected at all by this change.

If your computer runs satisfactorily now, it may not be necessary to update the software. To determine if you should update the software, refer to the Version Information section.

Manual Install

This section assumes to use Internet Explorer and Windows Explorer.

[Downloading file]

Click once on the underlined file name. Once this is done, some pop-up windows will appear.

Follow the instructions on the screen.

In the window to choose Run or Save, click the Save button.

Choose the folder you would like to download the file to and click the Save button. A different window will appear and the download will begin and complete. Once the download has completed, there may or may not be a message stating that the download completed successfully.

[Extracting file]

Make sure to be logged on with administrative account.

Locate the directory where the file was downloaded.

Locate the file that was downloaded and double-click it.

Follow the instructions on the screen.

In the "Select Destination Location" window, click Next. If you would like to select a different folder, click Browse.

In the "Ready to Install" window, click Install. All the necessary files will be extracted to the folder selected in the step 9.

[Installing files]

Make sure the checkbox next to "Install ..... now" is checked and click Finish.

Follow the instructions on the screen.Note: If you use ThinkVantage Access Connections, Intel PROSet/Wireless component needs to be installed as pre-selected during the above procedure.

Follow the instructions on the screen to complete installation and restart the computer.

Finally delete the file saved in Step 4.

Silent Install

Note: This is intended for system administrators only.

Refer to the "Manual Install" section, and download and extract the file.

In the step 11 of the "Installing files" section, uncheck the checkbox next to "Install ..... now", and then click Finish to cancel installation.

At the command line, execute Autorun.exe with the /QN option. Example: [Path where the files were extracted]\Autorun /QN

Uninstallation Instructions

Note:

If winlogon.exe error or any problem occurs after uninstalling the software, re-install any version of the software for problem solving.